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Author Topic: Kenwood TS-440s output power issues on CW  (Read 3740 times)
KK4CPH
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Posts: 154




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« Reply #15 on: November 10, 2012, 02:50:23 PM »


Quote
sure sounds like you need to fix the power supply.. Fred


Right you are Fred!  I brought in my car battery and hooked up the Kenwood and it seems to operate normal.  I did notice that when I left the power supply on (but nothing connected) that I still had a slight buzzing from the speaker.  When I turned it off the noise was gone.  So maybe some RF from the power supply.  I guess Pyramid wasn't a good choice.  No wonder it was so cheap!  I'm looking at the MFJ-4225MV 25amp. ($100)  If the MFJ units are junk then I could pick one up at Ten-Tec but they're not cheap ($180)
Glad it was something simple.  I didn't really feel like taking the radio apart!

Eric
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KK4CPH
Member

Posts: 154




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« Reply #16 on: December 01, 2012, 06:23:50 PM »

Update:  I bought a QJE PS30SW power supply 25A (30A surge)  Real nice, quiet unit.  Can't hear the fan at all.  Full power now on my TS440S.  No dim display or buzzing.  Looks like a keeper.   Cool

Eric

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